Power factor

Fire suppression for PFC panels

Power factor correction is vital for reducing costs, but the high density of capacitors and components in a PFC panel creates a significant fire risk. Dedicated in-panel fire suppression is not merely an option; it is a critical, life-saving investment that protects valuable electrical assets, keeps people safe, and secures uninterrupted business continuity.

3
Common ignition causes
In-panel
Where suppression sits
Assets + people
What it protects
OHSA
Compliance supported
Published
Read4 min
TopicPower factor
The short version

Power factor correction improves the efficiency of electrical power use. By improving the power factor, PFC systems reduce maximum demand, lower utility costs and enhance the performance of the electrical infrastructure. But those benefits come with an inherent risk that is easy to overlook.

The inherent fire risk in PFC panels

PFC panels house numerous capacitors and reactive components that, if poorly installed, poorly maintained, or exposed to harmonics, can generate excess heat. Fires can start from:

A fire within a panel can escalate rapidly, threatening the entire facility.

Why fire suppression is crucial

Dedicated suppression inside the panel enclosure is a critical strategy for asset integrity and operational resilience:

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Common questions

Why do PFC panels catch fire?

They house numerous capacitors and reactive components that can generate excess heat if poorly installed, poorly maintained, or exposed to harmonics. Common causes include electrical faults or overloads, capacitor failure and rupture, and dust accumulation or rodent ingress.

Why is in-panel fire suppression important?

A fire in an energised panel escalates rapidly and is extremely hazardous. Dedicated suppression detects and extinguishes it at the source, minimising component damage, downtime and risk to personnel.

Is fire suppression only about safety?

It protects safety and the business. PFC panels are valuable assets, and a fire causes costly downtime and damage. Suppression protects the asset, the people and continuity of operations together.

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